Problems with 'Launch <doc> with <app>'

[JonathanC at ag.nsw.gov.au]

Paste this into the (multi-line) message box and press enter:

answer file "Choose app" of type "APPL"
if it="" then exit to top
launch it

The chosen app should launch.
(However, if it was running already, the result will be: "process is 
already open" - see below*.)

Quit the app.
Now paste this into the message box and press enter:

answer file "Choose app" of type "APPL"
if it="" then exit to top
put it into ap
answer file "Choose doc" of type "TEXT"
if it="" then exit to top
launch it with ap

According to the Transcript Dictionary, the app should launch and chosen 
doc should open in it.
However, the result for me is "no such program".

I'm using Rev 2.1.2 on Mac OS X 10.2.8 (PowerBook G4 500MHz).


* In HyperCard the equivalent "open [<doc> with] <app>" command would 
bring app to the front even if it was already running, which was VERY 
useful. Is there a way to do this in Rev?

Regards,

Jonathan Cooper
Manager of Information / Website
Art Gallery of New South Wales
Sydney, Australia
http://www.artgallery.nsw.gov.au